WenmarOpen by Wenmar Pro

Service bulletin PIE0458

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10137398
Published by NHTSA2018-05-21
Manufacturer's numberPIE0458
Manufacturer's date2018-03-22
NHTSA componentSERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES

NHTSA's summary

This engineering informational bulletin is requesting information from the field on vehicles that have the condition of Brake Pedal Low or Goes to Floor with No External Signs of a Leak.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Brakes

Vehicles listed
CADILLAC XT52017
GMC ACADIA2017

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
16V8020002016-11-04. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER
20165422016-11-03. Brakes

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
25-NA-0652025-04-24. Service bulletin. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
21-NA-0432025-02-12. Service bulletin. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
17-NA-2712024-12-19. Service bulletin. This service bulletin provides a procedure to clean the back side of the rims and rotors and to correct the customer concern of wheel clicking.
21-NA-0432024-12-10. Service bulletin. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
22-NA-2442024-05-30. Warranty extension. This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
PIP5596A2024-04-15. Service bulletin. This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel pressure situation.
17-NA-2712022-11-03. Service bulletin. This bulletin provides a procedure to clean the back side of the rims and rotors and to correct the customers concern of wheel clicking.
15-00-89-004E2022-10-11. Service bulletin. This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
PIT5569B2022-08-15. Service bulletin. This Preliminary information communicates direction and examples when diagnosing multiple DTCs, one of which includes U**** Byte 71 DTC.
070316004D2022-06-13. Service bulletin. This service bulletin provides information for tire pressure monitoring (TPM) system concerns.